Pelvis and back pain

Hi ladies. Im 26 weeks and I'm experiencing pain in my pelvis, hips and back. I've got a support belt given to me last week and hopefully will start working soon. But work have warned me If I'm still struggling in a couple week they will finish me early :( I can't afford to do this so in need of some advice to help me through till mid March which is when I want to finish. Please help !! 👶💙